Results 41 to 50 of about 86,925 (244)

COST ASSESSMENT OF GOLD ORE DEPOSITS ADJUSTED FOR CAPITAL INVESTMENTS

open access: yesЗаписки Горного института, 2018
The paper focuses on the problems of geologic and economic assessment of mineral deposits. Existing methods have certain advantages and disadvantages, but always rely on unified assessment criteria that fail to take into account specific parameters of ...
A. Yu. Zaitsev
doaj   +1 more source

Estimation of efficiency of development of copper and gold deposits of Krasnoyarsk North [PDF]

open access: yesАрктика и Север, 2017
The article presents the probable approach to the assessment of the availability of the mineral deposits. This approach is specially created for initial estimation of resourses and reserves of low degree of exploration.
Viktor I. Bragin   +2 more
doaj   +1 more source

A discussion of prospecting direction for the Chelugoubei Gold Deposit in Gansu Province: The enlightening from contrast analysis of the geological conditions of "Golden Triangle" gold deposits in eastern segment of Altyn fault shearing zones

open access: yes地质科技通报, 2021
Chelugoubei Gold Deposit in Yumen City, Gansu Province is located at the intersection of the western North Qilian Orogenic Belts and eastern Altyn Tagh Sinistral strike-slip fault shearing zones, which is a famous "golden triangle" in Northwest China ...
Yanliang Liu, Ya Gao, Jindong Wei
doaj   +1 more source

Surface Plasmon Enhanced Photoluminescence of Carbon Dots Formed In Situ on Silver Gratings

open access: yesAdvanced Science, EarlyView.
Carbon emitters formed in situ on a silver grating via plasmonic catalysis yield enhanced spontaneous emission by preferential radiative decay into surface plasmons. Enhancement manifests as emission exhibiting characteristics of coherence (polarization, directionality), and accelerated lifetimes of ∼30 ps, yielding Purcell factors of ∼70.
Maryam Sadat Amiri Naeini   +5 more
wiley   +1 more source

Lithologic and electrometric characteristic of productive layers of the gurarinckiy-sobolinniy deposit low-chalky adjourments [PDF]

open access: yes, 2007
The construction of abnormal geochemical fields accompanying gold mineralization is investigated; criteria of its quantitative estimation are developed. Orderliness estimation methods of geochemical field abnormal structures and intensity of hydrothermal
Perevertaylo, Т. G.
core   +1 more source

Scalable Electrochemical Concrete Fabrication and Closed‐Loop Recycling

open access: yesAdvanced Science, EarlyView.
The electrochemical‐driven recycling strategy establishes a reversible concrete material flow by extracting Ca, Si, Al, and Fe from concrete waste and regenerating functional feedstocks. These reversed products are reassembled into new concrete, which re‐enters service and ultimately returns to waste, enabling a closed‐loop, waste‐origin, and low ...
Hanxiong Lyu   +7 more
wiley   +1 more source

Assessment of the prospects of the Dzhagdy-Selemdzinskaya gold-bearing metallogenic zone of Priamurskaya province

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
Dzhagdy-Selemdzinskaya metallogemc zone is shown to be the one of the most productive gold-bearing zones in Priamurskaya province. The placer and ore deposits mined in the area are estimated to be about 350 t of gold, including 293,811 of placer and 57 ...
V. A. Stepanov, A. V. Melnikov
doaj   +2 more sources

ON «STEP OF ALLOCATION» AND FORECASTING OF THE VEIN GOLD ORE BODIES

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
On the example of a number of domestic and foreign gold vein deposits it has been shown that the system of gold-ore bodies is located along some narrow local ore controlling displacements in a shape of veins.
E. M. Nekrasov
doaj   +1 more source

The relation between Cu/Au ratio and formation depth of porphyry-style Cu-Au ± Mo deposits [PDF]

open access: yes, 2018
Constraints on gold and copper ore grades in porphyry-style Cu-Au ± Mo deposits are re-examined, with particular emphasis on published fluid pressure and formation depth as indicated by fluid inclusion data and geological reconstruction.
Heinrich, Christoph   +2 more
core  

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